Vacuum-cleaner attachment for automobiles



Dec. 2, 1930. w. CTREHWOLD ET AL- 1,733,674

"""IUM CLEANER ATTACHMENT FOR'AUTOMOBILES Filed Julie 1, 1929 m C.Re/zwokl 3% J &. aft iNVENTORb ATTORNEY Patented 2, 1930 N T STATES? PATNT- OFFICE WALTON cnannncn REHWOLD, or BEVERLY HILLS, AND JAMES eonnonDUFF, or

' LOS ANGELES, cann onnm vacuumemmas. arracnmnx'r non AUTOMOBILES A inlication filedjl'une 1,

The invention has for an object to'provide a novel means for utilizingthe exhaust gases emitting from an automobileexhaust'pipe or mufier forcreating a suction that can be put to practical use in vacuum cleaningupholstery in or about the automobile.

In its more detailed nature the invention resides in the sprovision of anovel suction creating head mountable as an attachment miupon thedischarge end of an exhaust or mufiler tube and comprising a ipe-likebody, one end thereof 'beingmounta 1e on the said tube end and the otherend being constricted to form a restricted'discharge end; a pipe sectionmounted in the receiving end of the l pipe-like body and constrictedtherein to provide a' surrounding enlarged suction chamber and areducedjtubular portion within the enlarged portion which communicateswith d the exhaust or mufller tube and closes direct communication intosaid enlargement and which is provided: with novel suction creatingobstruction openings and extends to "a position for delivering into thedischarge end of the pipeslike body and for providing a reannularpassage from the enlarged a flexible vacuum line which maybe e uipped.with'a suitable cleaner nozzle to ena le suctioncleaning of upholstery.

W'th these and other objects in view which will'more fully appear, thenature of the invention will be more clearly understood by following thedescription, the appended accompanying drawings.

In the drawings: Figure 1 is an elevation invention, v

Figure 2 is a central longitudinal section, and. A

' Figure 3 is a cross section taken on the line claims, and the severalviews illustrated in the illustrating the 33 on Figure 2.

Like reference numerals designate corre sponding parts throughout theseveral figures of the drawings.

-In' the drawin s, 1 designates the tubular discharge end o the usualexhaust pipe or 1929. Serial no. 867,817.

5 to provide a reduced discharge end 6.

A second pipe-like body 7 is secured in the receiving end of the body 4and is conicall'y constricted as at 8 to provide areduced discharge end9 which extends to a point adjacent the entrance into the discharge endv6 so as to provide a restricted annular passage l0and is so positionedinthe body 4 as to provide a relatively large surrounding suction chamber11 communicating with the discharge end 6 through the restricted throat10.

The joined entrant ends of the bodies 4 and 7 conj ointly form amounting neck which may be equlpped with bayonet slots 12 to engage thelugs 3 of the band 2 to provide a convenient removable mounting for thedevice.

The reduced tube portion 9 is provided with a plurality of suctioncreating obstruction openings 13 communicating between the interior ofsaid tube and the suction chamber surrounding it. These openings areformed by transversely slitting the tube at thedesired intervals andbending the resulting lips 14 nearest the discharge end outwardly andthe lips 15 nearest the inlet end inwardly to form obstructions to freepassage of the exhaust gases through the tube portion 9.

A tubular extension 16 projects from one wall of the suction chamber andafi'ords means for connecting one end of a 'flexible tube or line 17which may carry a suction nozzle (not shown) of suitable designlat its'free end to enable vacuum cleaning of upholstery in or adjacent theautomobile of which the exhaust pipe or mufiler forms a art.

P In operation, as the j'exhaust gases rush past the lips 14, 15 and theopenings provided. thereby, and also past the restricted annularthroatway 10, a partial vacuum will be created in the chamber 11.causing air at may be variously changed and modified without departingrrom the spirit and scope of our invention.

We claim:

1. A device of the character described comprising a tubular body havingan entrant end and a discharge end and having openings therethroughspaced radially about its body intermediately of its ends, said openingsbeing formed by transversely slitting the body and bending the resultinglips nearest the discharge end outwardly and the resulting lips nearestthe entrant end inwardly, a second body surrounding the firstv mentionedbody to form a surrounding vacuum chamber and having an open endextended beyond the discharge end ofthe first mentioned body, saidextended open end being constricted as it passes said discharge end toprovide a reduced diameter discharge extension and a restricted annularthroatway surrounding said discharge end, and means to removably securethe device upon an exhausting medium.

2. A device of the character described comprising inner and outertubular bodies forming therebetween a vacuum chamber and having inletand discharge ends, the outer body having a suction inlet incommunication with the vacuum chamber and located between the inlet anddischarge ends of the inner body, the inner" body being provided with aplurality of openings located between the suction inlet of the outerbody and the discharge end of the inner body, lips projecting inwardlyfrom the inner body on the sides of the openings located towards theinlet end of the body to form a restricted passage there in, and lipsprojecting outwardly from the inner body on the sides of the openings located towards the discharge end of the body, the lips at'each openingconjointly forming an inlet passage inclined inwardly towards thedischarge end of the inner body.

3. A device of the character described comprising inner and outertubular bodies forming therebetween a vacuum chamber and having inletand discharge ends, the outer body having a suction inlet incommunication with the vacuum chamber and located between the inlet and-discharge ends of the inner body, the inner body being provided with apluralty of openings located between the suction inlet of the outer bodyand the discharge end of the inner body, lips projecting inwardly fromthe inner bod on the sides of the open ings locatedtowar s the inlet endof the body to form a restricted passage therein, and lips projectingoutwardly from the inner body on the sides of the openings locatedtowards the discharge end of the body, the lips at each openingconjointly forming an inlet passage inclined inwardly towards thedischarge end of the inner body, the outer surfaces of the inwardlyprojecting lips and the inner surfaces of the outwardly projecting lipsbeing concaved.

4. A device of the character described comprising inner and outertubular bodies forming therebetween a vacuum chamber and having inletand discharge ends, the outer body having a suction inlet in communication with the vacuum chamber and located between the inlet and dischargeends of the inner body, the inner body being provided with a series ofopenings arranged in a plane transverse to the longitudinal axis of thebodies and located between the suction inlet of the outer body and thedischarge end of the inner body, lips projecting inwardly from the innerbody on the sides of the o enin s located towards the inlet end of t eb0 y to form a restricted assage therein, and li s projecting outwar yfrom the inner b0 y on the sides of the openings located towards thedischarge end of the body, the lips at each opening conjointly formingan inletpassage inclined inwardly towards the discharge end of the innerbody.

In testimony whereof we hereunto afix our signatures. I

WALTON CLARENCE REHWOLD.

JAMES GORDON DUFF.

